Eighteen holes ofgolfare in the books at Royal Portrush Golf Club, and that meansThe Open Championshiphas reached Cut Day for the 156-player field. So, who is missing the cut line? And how many? That is the question that will soon be answered assecond-round competitionresumes in Northern Ireland on July 18 starting with the first group hitting the links bright and early. REQUIRED READING:Open Championship 2025 projected cut line: Live tracker from Royal Portrush Using the USA TODAY Sports projected cut line tracker,some of the top golfers in the world are projected not to make it to the weekend, including Bryson DeChambeau, Ryder Cup captain Keegan Bradley, Ludvig Aberg, Justin Thomas and Viktor Hovland, to name a few. Here's what to know about the cut line rules at The Open: Those that finish in the top 70 — including ties — following the second round of competition will make the cut line at The Open Championship. Noted above, the cut line at the 2025 Open Championship is those who finish in the top 70, including ties, following the second round of competition at Royal Portrush Golf Club in Northern Ireland. Additionally, the "10-shot rule," where those within 10 shots of the lead after the opening two rounds will make the cut line, is not in use. The cut line at The Open is different than some of the other majors on the PGA Tour schedule, as the U.S. Open has a cut line of top 60 and ties, while the Masters has a cut line of the top 50 and ties. Only the PGA Championship has those who finish in the top 70, including ties, make the cut line. Dates:Thursday, July 17 – Sunday, July 20 Where:Royal Portrush Golf Club (Antrim, Northern Ireland) The 153rd edition of The Open Championship began on Thursday, July 17 and runs through Sunday, July 20 at Royal Portrush Golf Club in Northern Ireland. This article originally appeared on USA TODAY:The Open Championship: Explaining cut line rules for British Open